Why we still build with Ruby in 2026

When we started Lago, we picked Ruby on Rails for our core API. The choice was obvious because our founding team had decade of Rails experience. Rails was the fastest way we could build an API product. Today, we've receive millions of API calls a day. We've upgraded through multiple Ruby/Rails versions. Maybe that sounds silly in a world where young, Python/Go/JS-wielding entitlements have never even heard of Ruby. We do admit that we've added Go and Rust where it makes sense. But if we were